<html>





<head>

<script>
		
	window.onload=function(){
		setTimeout(function(){
                  var buy = document.getElementById('payment_success');//给你的a标签加一个id :btnBuy
                  buy.click();
				  
              },3000);//后面的3000是以毫秒为单位。
		}
</script>

</head>

<body>


<a id="payment_success" href="https://apps.ddoc.com/orders/payment_success">跳转成功</a>

</body>

</html>